Mullers are hand made of solid glass for mixing paint pigments.

Mullers are used by the artist for mixing pigments including tempera, acrylics,and oils.

SET: Muller, Glass Palette and 4 Jars of Pure Artist Pigments

Glass Muller for Making Paint, 2pcs 3-Inch and 5-Inch Watercolor Muller Flat Bottom Mineral Pigment Grinding Pestle Set for Making Paint, Oil Painting

Glass Muller, medium Mortars & Pestles, Glass Mullers

Glass Muller for Making Paint, 1.9 inch Watercolor Muller Flat Bottom Mineral Pigment Grinding Pestle Homemade Paint Tools for Watercolor, Oil

How to Make Color Shift Watercolors Tutorial

Extra Large Glass Mullers and sandblasted mixing plates.

Cornelissen Professional Glass Mullers are handmade and have an ergonomic handle to ease fatigue when grinding large amounts of pigment. The base of the muller is ground flat and has been sandblasted to create a fine tooth to facilitate the grinding of pigment. Mullers are used to grind pigment to a floury consistency for mixing in a suitable oil or medium. In order for a pigment to color the medium richly and evenly, it must be finely ground.

Cornelissen : Professional Glass Muller : 8cm : for Mixing and Grinding Pigment

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2 Muller: HANDMADE, Don't Settle for Ordinary Glass

The flat-bottomed paint muller is an indispensable tool for homemade natural mineral pigment oil paints, watercolor paint,tempera paints and thangka paints. It is suitable for artists and painting enthusiasts who have strong individual requirements for pigment performance The size of the glass muller is moderate(2.4x2.4x4.7in,7.8oz.), and the hand feels comfortable, making work easier.The grinding surface is frosted, suitable for use with tempered glass grinding plates or palettes.

CUGEBANNA Glass Muller for Making paint(2.4in),mineral Pigment Grinding Pestle, Suitable for Oil Painting, watercolor,tempera, Thangka